The chemical in question, "(Z)-2-Bromo-3-[2-(4-nitro-benzyloxycarbonylamino)-ethylsulfanyl]-3-{(2R,3S)-3-[(R)-1-(4-nitro-benzyloxycarbonyloxy)-ethyl]-4-oxo-azetidin-2-ylsulfanyl}-acrylic acid 4-nitro-benzyl ester," is a complex organic molecule with a long and intricate structure. It features a (Z)-2-bromo-3-acrylic acid backbone, with a 4-nitro-benzyl ester group attached to the carboxylic acid. The molecule also contains a 2-(4-nitro-benzyloxycarbonylamino)-ethylsulfanyl group and a (2R,3S)-3-[(R)-1-(4-nitro-benzyloxycarbonyloxy)-ethyl]-4-oxo-azetidin-2-ylsulfanyl group, which contribute to its overall complexity. (Z)-2-Bromo-3-[2-(4-nitro-benzyloxycarbonylamino)-ethylsulfanyl]-3-{(2R,3S)-3-[(R)-1-(4-nitro-benzyloxycarbonyloxy)-ethyl]-4-oxo-azetidin-2-ylsulfanyl}-acrylic acid 4-nitro-benzyl ester is likely to be found in advanced pharmaceutical or chemical research, given its intricate structure and the presence of nitro and benzyl groups, which are common in synthetic organic chemistry and drug development.
The CAS Registry Mumber 72888-53-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,8,8 and 8 respectively; the second part has 2 digits, 5 and 3 respectively. Calculate Digit Verification of CAS Registry Number 72888-53: (7*7)+(6*2)+(5*8)+(4*8)+(3*8)+(2*5)+(1*3)=170 170 % 10 = 0 So 72888-53-0 is a valid CAS Registry Number.
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